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GB1069690A - Heat shrinkable polytetrafluoroetbylene copolymer tubular film - Google Patents

Heat shrinkable polytetrafluoroetbylene copolymer tubular film

Info

Publication number
GB1069690A
GB1069690A GB54574/65A GB5457465A GB1069690A GB 1069690 A GB1069690 A GB 1069690A GB 54574/65 A GB54574/65 A GB 54574/65A GB 5457465 A GB5457465 A GB 5457465A GB 1069690 A GB1069690 A GB 1069690A
Authority
GB
United Kingdom
Prior art keywords
tubular film
tubing
copolymer
tetrafluoroethylene
melt viscosity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB54574/65A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1069690A publication Critical patent/GB1069690A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/003—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/06—Making preforms having internal stresses, e.g. plastic memory
    • B29C61/08—Making preforms having internal stresses, e.g. plastic memory by stretching tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/38—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses
    • B29C63/42—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses using tubular layers or sheathings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/001—Tubular films, sleeves
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1,069,690. Heat shrinkable tetrafluoroethylene copolymer tubular film. E. I. DU PONT DE NEMOURS & CO. Dec. 23, 1965 [Dec. 31, 1964], No. 54574/65. Heading B5B. Heat-shrinkable tubular film is made by extruding in tubular form at 350‹ to 365‹ C. a copolymer of 5 to 95% by weight of tetrafluoroethylene and a terminally ethylenically unsaturated compound having a " specific melt viscosity" of 300,000 to 1,000,000 poises, quenching the extruded tubing by cooling it to a temperature of 130‹ C. or below, heating the tubing to 80‹ to 200‹ C., expanding the heated tubing diametrically by at least 9% and not more than 200% of its original diameter by applying internal gas pressure in the range of from 1À1 to 16 atmospheres absolute and cooling the expanded tubular film while maintaining its expanded diameter. The expression "specific melt viscosity " is defined as the melt viscosity determined at 380‹ C. in accordance with A.S.T.M. D-1238-52-T. Examples of comonomers copolymerizable with tetrafluoroethylene are the monoethylenic hydrocarbons such as ethylene, propylene, isobutylene and styrene, halogenated compounds such as 1,1-difluoro-2-chloroethylene, trifluoroethylene, chlorotrifluoroethylene, and hexafluoropropylene (also called perfluoropropylene). The preferred copolymer is a tetrafluoroethylene/ hexafluoropropylene copolymer having a specific melt viscosity within the specified range and wherein the hexafluoropropylene constitutes from about 11À2 to 12À8 mol per cent of the monomers. The expression " heatshrinkable tubular film " is defined as tubing which through the application of heat and internal gas pressure has been expanded in diameter and set in its expanded condition, so that, upon reheating, it will shrink in diameter towards its original dimensions. In use the tubing is slipped over an article to be jacketed, such as a pipe or roller and is reheated to a temperature above about 80‹ C. and less than its melting point, for example, with a " hot gas " gun at about 315‹ C. The tubular film is specified to have a diametral shrinkage of at least 5% and not more than 66À7%.
GB54574/65A 1964-12-31 1965-12-23 Heat shrinkable polytetrafluoroetbylene copolymer tubular film Expired GB1069690A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US42251264A 1964-12-31 1964-12-31

Publications (1)

Publication Number Publication Date
GB1069690A true GB1069690A (en) 1967-05-24

Family

ID=23675220

Family Applications (1)

Application Number Title Priority Date Filing Date
GB54574/65A Expired GB1069690A (en) 1964-12-31 1965-12-23 Heat shrinkable polytetrafluoroetbylene copolymer tubular film

Country Status (4)

Country Link
DE (1) DE1938880U (en)
FR (1) FR1462629A (en)
GB (1) GB1069690A (en)
NL (1) NL6517182A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091766A3 (en) * 1982-04-08 1984-09-12 E.I. Du Pont De Nemours And Company Perfluorocarbon copolymer films
US4510301A (en) * 1982-06-01 1985-04-09 E. I. Du Pont De Nemours And Company Fluorocarbon copolymer films
EP0140546A3 (en) * 1983-09-09 1986-03-12 Unitika Ltd. Stretchend fluorine type film and method for manufacture thereof
WO2009076450A1 (en) * 2007-12-12 2009-06-18 E. I. Du Pont De Nemours And Company Core/shell polymer and fluoropolymer blend blown film process
CN111556942A (en) * 2018-01-04 2020-08-18 郡是株式会社 Thermoplastic fluororesin pipe

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4250605A (en) * 1978-01-19 1981-02-17 The Carborundum Company Biaxially stressed fluorinated polymer roll cover and method for making same
US4450871A (en) * 1981-04-21 1984-05-29 Sumitomo Electric Industries, Ltd. Heat-shrinkable tubes
DE3861336D1 (en) * 1987-03-27 1991-02-07 Asahi Chemical Ind A MOLDED PART FROM A TETRAFLUORAETHYLENE POLYMER.

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091766A3 (en) * 1982-04-08 1984-09-12 E.I. Du Pont De Nemours And Company Perfluorocarbon copolymer films
US4510300A (en) * 1982-04-08 1985-04-09 E. I. Du Pont De Nemours And Company Perfluorocarbon copolymer films
US4510301A (en) * 1982-06-01 1985-04-09 E. I. Du Pont De Nemours And Company Fluorocarbon copolymer films
EP0140546A3 (en) * 1983-09-09 1986-03-12 Unitika Ltd. Stretchend fluorine type film and method for manufacture thereof
WO2009076450A1 (en) * 2007-12-12 2009-06-18 E. I. Du Pont De Nemours And Company Core/shell polymer and fluoropolymer blend blown film process
CN111556942A (en) * 2018-01-04 2020-08-18 郡是株式会社 Thermoplastic fluororesin pipe
EP3736476A4 (en) * 2018-01-04 2021-09-15 Gunze Limited THERMOPLASTIC FLUORINE RESIN TUBE
CN111556942B (en) * 2018-01-04 2022-06-14 郡是株式会社 Thermoplastic fluorine-containing resin pipe
US11802199B2 (en) 2018-01-04 2023-10-31 Gunze Limited Thermoplastic fluororesin tube

Also Published As

Publication number Publication date
DE1938880U (en) 1966-05-18
FR1462629A (en) 1966-12-16
NL6517182A (en) 1966-07-04

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